WO2007144262A1 - Gripper for containers - Google Patents

Gripper for containers Download PDF

Info

Publication number
WO2007144262A1
WO2007144262A1 PCT/EP2007/055244 EP2007055244W WO2007144262A1 WO 2007144262 A1 WO2007144262 A1 WO 2007144262A1 EP 2007055244 W EP2007055244 W EP 2007055244W WO 2007144262 A1 WO2007144262 A1 WO 2007144262A1
Authority
WO
WIPO (PCT)
Prior art keywords
jaw
gripper
actuating
actuating means
cam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2007/055244
Other languages
French (fr)
Other versions
WO2007144262A8 (en
Inventor
Fabrizio Preti
Massimiliano Barbieri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sidel International AG
Original Assignee
Sidel Holdings and Technology SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sidel Holdings and Technology SA filed Critical Sidel Holdings and Technology SA
Priority to US12/302,916 priority Critical patent/US8191948B2/en
Priority to CN2007800218230A priority patent/CN101466631B/en
Priority to JP2009514735A priority patent/JP5174016B2/en
Priority to MX2008015315A priority patent/MX2008015315A/en
Publication of WO2007144262A1 publication Critical patent/WO2007144262A1/en
Publication of WO2007144262A8 publication Critical patent/WO2007144262A8/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
    • B65G47/84—Star-shaped wheels or devices having endless travelling belts or chains, the wheels or devices being equipped with article-engaging elements
    • B65G47/846—Star-shaped wheels or wheels equipped with article-engaging elements
    • B65G47/847—Star-shaped wheels or wheels equipped with article-engaging elements the article-engaging elements being grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C3/24—Devices for supporting or handling bottles
    • B67C3/242—Devices for supporting or handling bottles engaging with bottle necks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/02—Articles
    • B65G2201/0235—Containers
    • B65G2201/0244—Bottles
    • B65G2201/0247—Suspended bottles

Definitions

  • the present invention relates to a gripper for containers of the type used in systems for manipulating containers (particularly bottles), in filling plants.
  • Both linear and rotary filling plants are known to comprise a plurality of serially arranged operating units for the bottles to be moved therethrough.
  • PET bottles particularly, are moved by being hooked at the neck by means of suitable grippers that are usually made of steel or resistant plastic. These grippers are controlled by suitable cams, which provide to close them around a bottle neck in the gripping stations, and then hold the same in this condition throughout the pathway to the release station.
  • the problem at the heart of the present invention is thus to provide a gripper for containers which does not get damaged even when a container is suddenly pulled apart .
  • Fig. 1 is a sectional plan view of the inventive gripper as being closed on a bottle
  • Fig. 2 is a plan view of the gripper in Fig. 1 in the opened condition
  • Fig. 3 is a sectional plan view of the gripper in Fig. 1 in a step of pulling apart the container;
  • Fig. 4 is a view according to the section IV-IV in Fig. 1;
  • Fig. 5 is a view according to the section V-V in Fig. 1.
  • the gripper being the object of the present invention, which is generally designated with 1, comprises a support 2 on which cam means 3 and first 4 and second 5 jaws of the gripper are mounted .
  • the support 2 is plate-like and fixed to the moving system (not shown) of the containers 6. Both the cam means 3 and the jaws 4, 5 are pivotally hinged to the support 2 by means of suitable hinge means 7, 7', 7", such as to hang from said support 2.
  • the cam means 3 are of a conventional type, such as a disk cam 8 comprising a first reactive profile 8a intended to interact with the driven organ of the gripper and a second reactive profile 8b intended to interact with suitable guide means arranged in a preset fixed position on the equipment, such as to control the opening and closure of the gripper 1 where desired.
  • the first jaw 4, hereinafter referred to as the guided jaw 4 is a rocker arm driven organ for the cam means 3.
  • the driven jaw 4 comprises a body 9 that is hinged to said support 2 via the hinge means 7' described above, a guide finger 10 and a hook 11.
  • the guide finger 10 is intended to interact with the cam means 3 and in all the operating steps of the gripper 1 it remains in contact with the first reactive profile 8a of the cam.
  • the hook 11 is intended to interact with the neck of the container 6, normally below the stop ring for the container closure, and comprises to the purpose a gripping profile 11a which is shaped such as to ensure, together with the matching hook of the second jaw 5, the best grip on the neck of the container 6.
  • said gripping profile 11a is substantially semicircular and comprises a central depressed portion 12 and a peripheral portion 13 in relief, which are joined to each other in a stepped manner.
  • Elastic means 14 are hinged to the body 9 of the guided jaw 4, on the portion proximate to the guide finger 10, by means of hinge means 9a. At the opposite end, the elastic means 14 are directly hinged to the support 2 by means of hinge means 15. These elastic means 14 are preloaded such that they tend to recall the guided jaw 4 in an open condition, such as shown in Fig. 2. The closure of the gripper 1 will thus take place against the resistance of the elastic means 14 by the action of the cam means 3 on the guide finger 10 of the guided jaw 4.
  • the body 9 of the guided jaw 4 further comprises actuating means 16 that, in cooperation with the second jaw 5, provide to open/close the gripper 1.
  • These actuating means 16 comprise a body 17 that is, in turn, pivotally hinged to the hinge means 7', from which an actuating tooth 18 projects in the direction substantially perpendicular to the axis of the guided j aw 4.
  • the body 17 of the actuating means 16 is housed in a cavity having a substantially complementary shape which is purposely formed in the body 9 of the guided jaw 4.
  • Said body 17 has a substantially circular plan section that is interrupted by a step forming a pawl 19, which abuts against an abutment surface 19a of the body 9 and prevents the actuating means 16 from rotating clockwise, while counter-clockwise rotation is allowed.
  • the body 17 further has a relief 20 on which the elastic means 21 act upon. At the opposite end thereof, the elastic means 21 act on a stop element 22 being formed in the body 9 of the guided j aw 4 and are preloaded such as to hold the pawl 19 pressed against the abutment surface 19a.
  • the second jaw 5, which is pivotally hinged to the hinge means 7", as said above, has a body 23 and a hook 111 that is entirely similar to the hook 11 of the guided jaw 4, thereby the elements 112, Ilia and 113 correspond to the elements 12, 11a and 13 of the guided j aw 4.
  • the second jaw 5 further comprises receiving means 116 for the actuating means 16 of the guided jaw 4. Practically, from the body 23 of the second jaw 5 there projects a pair of teeth 24, 24' which are separated by a concavity 25 that forms a seat for the actuating tooth 18 of the guided jaw 4.
  • the gripper 1 Upon a non operating condition, the gripper 1 is as shown in Fig. 2, with the jaws 4, 5 being opened.
  • the guided jaw 4 When the first reactive profile 8a of the cam 8 acts on the guide finger 10, the guided jaw 4 is driven to rotate clockwise against the resistance of the elastic means 14.
  • the actuating tooth 18 will thus act against the walls of the teeth 24, 24' of the second jaw 5, thus causing a counter-clockwise rotation of the same about the hinge means 7".
  • the rotation of the two jaws 4, 5 causes the same to be closed around the neck of a container 6, as shown in Fig. 1.
  • the actuating tooth 18 will integrally move with the guided jaw 4, due to the fact that the elastic means 21 are suitably preloaded and thus counteract the thrust reaction to which the actuating means 16 are subjected and which would tend to cause them to rotate counter-clockwise.
  • the container 6 acts as a lever on the second jaw 5, which thus rotates clockwise, thereby the teeth 24, 24' act on the actuating tooth 18 such that it is forced to rotate counter-clockwise.
  • the actuating tooth 18 is integral with the actuating means 16 and these are free to rotate counter-clockwise against the resistance of the elastic means 21, when the preload force of the elastic means is overcome, the gripper 1 opens as much as to allow the container 6 to be released without causing any damage to the gripper.
  • the actuating tooth 18 is integral with the guided jaw 5 as in the prior art grippers, the gripper will be broken or at least damaged.
  • the advantages of the gripper 1 according to the invention are thus apparent.
  • the fact that the gripper is prevented from being damaged or broken by means of the inventive device not only means that the cost for spare parts has been decreased, but also and above all, that the number of interruptions of the plant operation for allowing the replacement of the damaged piece is dramatically reduced, which results in the optimization of the manufacturing cycle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Specific Conveyance Elements (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)

Abstract

The present invention relates to a gripper for containers of the type used in systems for manipulating containers, particularly bottles, in filling plants. More particularly, the present invention relates to a gripper (1) for systems for manipulating containers (6) comprising a support (2) to which cam means (3) are pivotally hinged, a first jaw (4) being guided by said cam means (3) and a second jaw (5) being controlled by said first jaw (4), said first jaw (4) comprising actuating means (16) interacting with receiving means (116) that are integral with said second jaw (5) for either opening or closing said gripper (1), characterized in that said actuating means (16) are pivotally associated with said first jaw (4) such that, following an opening bias by said receiving means (116) due to the rotation of said second jaw (5) relative to said first jaw (4), said actuating means (16) can rotate relative to said first jaw (4) thus allowing said gripper (1) to be at least partially opened.

Description

"GRIPPER FOR CONTAINERS" DESCRIPTION
The present invention relates to a gripper for containers of the type used in systems for manipulating containers (particularly bottles), in filling plants.
Both linear and rotary filling plants are known to comprise a plurality of serially arranged operating units for the bottles to be moved therethrough. Plastic
(PET) bottles, particularly, are moved by being hooked at the neck by means of suitable grippers that are usually made of steel or resistant plastic. These grippers are controlled by suitable cams, which provide to close them around a bottle neck in the gripping stations, and then hold the same in this condition throughout the pathway to the release station.
The bottles, however, sometimes happen to be entangled in parts of the machine. In this event, though becoming deformed, they do not break, and thus act as levers on the gripper that is locked by the cam in a closed condition, and cause serious damage to it. While steel grippers can be deformed, plastic grippers are easily broken, which implies that the latter have to be frequently replaced.
The problem at the heart of the present invention is thus to provide a gripper for containers which does not get damaged even when a container is suddenly pulled apart .
This problem is solved by a gripper for systems for manipulating containers such as outlined in the annexed claims.
Further features and advantages of the gripper being the object of the present invention will be better understood from the description of a preferred embodiment, which is given below by way of a non- limiting illustration, with reference to the following figures :
Fig. 1 is a sectional plan view of the inventive gripper as being closed on a bottle;
Fig. 2 is a plan view of the gripper in Fig. 1 in the opened condition;
Fig. 3 is a sectional plan view of the gripper in Fig. 1 in a step of pulling apart the container;
Fig. 4 is a view according to the section IV-IV in Fig. 1; Fig. 5 is a view according to the section V-V in Fig. 1.
With reference to the figures, the gripper being the object of the present invention, which is generally designated with 1, comprises a support 2 on which cam means 3 and first 4 and second 5 jaws of the gripper are mounted .
As may be seen in Fig. 4 and 5, the support 2 is plate-like and fixed to the moving system (not shown) of the containers 6. Both the cam means 3 and the jaws 4, 5 are pivotally hinged to the support 2 by means of suitable hinge means 7, 7', 7", such as to hang from said support 2.
The cam means 3 are of a conventional type, such as a disk cam 8 comprising a first reactive profile 8a intended to interact with the driven organ of the gripper and a second reactive profile 8b intended to interact with suitable guide means arranged in a preset fixed position on the equipment, such as to control the opening and closure of the gripper 1 where desired. The first jaw 4, hereinafter referred to as the guided jaw 4, is a rocker arm driven organ for the cam means 3. The driven jaw 4 comprises a body 9 that is hinged to said support 2 via the hinge means 7' described above, a guide finger 10 and a hook 11. The guide finger 10 is intended to interact with the cam means 3 and in all the operating steps of the gripper 1 it remains in contact with the first reactive profile 8a of the cam.
The hook 11 is intended to interact with the neck of the container 6, normally below the stop ring for the container closure, and comprises to the purpose a gripping profile 11a which is shaped such as to ensure, together with the matching hook of the second jaw 5, the best grip on the neck of the container 6. In substance, said gripping profile 11a is substantially semicircular and comprises a central depressed portion 12 and a peripheral portion 13 in relief, which are joined to each other in a stepped manner.
Elastic means 14 are hinged to the body 9 of the guided jaw 4, on the portion proximate to the guide finger 10, by means of hinge means 9a. At the opposite end, the elastic means 14 are directly hinged to the support 2 by means of hinge means 15. These elastic means 14 are preloaded such that they tend to recall the guided jaw 4 in an open condition, such as shown in Fig. 2. The closure of the gripper 1 will thus take place against the resistance of the elastic means 14 by the action of the cam means 3 on the guide finger 10 of the guided jaw 4. The body 9 of the guided jaw 4 further comprises actuating means 16 that, in cooperation with the second jaw 5, provide to open/close the gripper 1. These actuating means 16 comprise a body 17 that is, in turn, pivotally hinged to the hinge means 7', from which an actuating tooth 18 projects in the direction substantially perpendicular to the axis of the guided j aw 4.
The body 17 of the actuating means 16 is housed in a cavity having a substantially complementary shape which is purposely formed in the body 9 of the guided jaw 4. Said body 17 has a substantially circular plan section that is interrupted by a step forming a pawl 19, which abuts against an abutment surface 19a of the body 9 and prevents the actuating means 16 from rotating clockwise, while counter-clockwise rotation is allowed. The body 17 further has a relief 20 on which the elastic means 21 act upon. At the opposite end thereof, the elastic means 21 act on a stop element 22 being formed in the body 9 of the guided j aw 4 and are preloaded such as to hold the pawl 19 pressed against the abutment surface 19a.
The second jaw 5, which is pivotally hinged to the hinge means 7", as said above, has a body 23 and a hook 111 that is entirely similar to the hook 11 of the guided jaw 4, thereby the elements 112, Ilia and 113 correspond to the elements 12, 11a and 13 of the guided j aw 4.
The second jaw 5 further comprises receiving means 116 for the actuating means 16 of the guided jaw 4. Practically, from the body 23 of the second jaw 5 there projects a pair of teeth 24, 24' which are separated by a concavity 25 that forms a seat for the actuating tooth 18 of the guided jaw 4.
The operation of the inventive gripper will be now described.
Upon a non operating condition, the gripper 1 is as shown in Fig. 2, with the jaws 4, 5 being opened. When the first reactive profile 8a of the cam 8 acts on the guide finger 10, the guided jaw 4 is driven to rotate clockwise against the resistance of the elastic means 14. The actuating tooth 18 will thus act against the walls of the teeth 24, 24' of the second jaw 5, thus causing a counter-clockwise rotation of the same about the hinge means 7". The rotation of the two jaws 4, 5 causes the same to be closed around the neck of a container 6, as shown in Fig. 1. The actuating tooth 18 will integrally move with the guided jaw 4, due to the fact that the elastic means 21 are suitably preloaded and thus counteract the thrust reaction to which the actuating means 16 are subjected and which would tend to cause them to rotate counter-clockwise.
Upon the subsequent opening of the gripper 1, i.e. when the first reactive profile 8a of the cam 8 moves back to the position in Fig. 2, the actuating tooth 18 will move again integrally with the guided jaw 4 due to the pawl 19 that prevents the actuating means 16 from rotating clockwise.
When the anomalous situation occurs as shown in Fig. 3 (e.g., when the container 6 gets entangled in a fixed part of the machine) , the container 6 acts as a lever on the second jaw 5, which thus rotates clockwise, thereby the teeth 24, 24' act on the actuating tooth 18 such that it is forced to rotate counter-clockwise. As the actuating tooth 18 is integral with the actuating means 16 and these are free to rotate counter-clockwise against the resistance of the elastic means 21, when the preload force of the elastic means is overcome, the gripper 1 opens as much as to allow the container 6 to be released without causing any damage to the gripper. On the contrary, when the actuating tooth 18 is integral with the guided jaw 5 as in the prior art grippers, the gripper will be broken or at least damaged.
The advantages of the gripper 1 according to the invention are thus apparent. The fact that the gripper is prevented from being damaged or broken by means of the inventive device not only means that the cost for spare parts has been decreased, but also and above all, that the number of interruptions of the plant operation for allowing the replacement of the damaged piece is dramatically reduced, which results in the optimization of the manufacturing cycle.
It will be appreciated that only a particular embodiment of the gripper for container handling systems being the object of the present invention has been described herein, to which those skilled in the art will be able to make any and all modifications necessary for its adjustment to specific applications, without however departing from the scope of protection of the present invention as defined in the annexed claims.

Claims

1. A gripper (1) for systems for manipulating containers (6) comprising a support (2) to which cam means (3) are pivotally hinged, a first jaw (4) being guided by said cam means (3) and a second jaw (5) being controlled by said first jaw (4), said first jaw (4) comprising actuating means (16) interacting with receiving means (116) that are integral with said second jaw (5) for either opening or closing said gripper (1), characterized in that said actuating means (16) are pivotally associated with said first jaw (4) such that, following an opening bias by said receiving means (116) due to the rotation of said second jaw (5) relative to said first jaw (4), said actuating means (16) can rotate relative to said first jaw (4) thus allowing said gripper (1) to be at least partially opened.
2. The gripper (1) according to claim 1, wherein said actuating means (16) comprise a body (17) from which there projects an actuating tooth (18) and wherein said receiving means (116) comprise a pair of teeth (24, 24') integral with said second jaw (5), said actuating teeth (18) being fitted therebetween and interacting therewith .
3. The gripper (1) according to claim 2, wherein said body (17) of the actuating means (16) is housed in a cavity having a substantially complementary shape, which is formed in said first jaw (4), said body (17) comprising a pawl (19) intended to abut against an abutment surface (19a) of said first jaw (4) for preventing the rotation of said actuating means (16) in a rotational direction, while allowing the same to rotate in the opposite direction.
4. The gripper (1) according to claim 2 or 3, wherein said actuating means (16) comprise a relief (20) and elastic means (21) acting on said relief (20) and on a stop element (22) being associated with said first jaw (4) .
5. The gripper (1) according to claim 4, wherein said elastic means (21) are preloaded such that the pawl (19) is hold pressed against the abutment surface (19a) .
6. The gripper (1) according to any claim 1 to 5, wherein between said first jaw (4) and said support (2) there are hinged elastic means (14), said elastic means (14) being preloaded such that they tend to recall said first jaw (4) in an opened condition.
7. The gripper (1) according to any claim 1 to 6, wherein said first and second jaws (4, 5) comprise respective hooks (11, 111) being intended to interact with the neck of the container (6), which have a gripping profile (Ha, Ilia) for the neck of said container ( 6) .
8. The gripper (1) according to claim 7, wherein said gripping profile (Ha, Ilia) is substantially semicircular and comprises a central depressed portion (12, 112) and a peripheral portion (13, 113) in relief, which are joined to each other in a stepped manner.
9. The gripper (1) according to any claim 1 to 8, wherein said first jaw (4) comprises a guide finger (10) that is intended to interact with a reactive profile (8a) of said cam means (3) .
PCT/EP2007/055244 2006-06-14 2007-05-30 Gripper for containers Ceased WO2007144262A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US12/302,916 US8191948B2 (en) 2006-06-14 2007-05-30 Gripper for containers
CN2007800218230A CN101466631B (en) 2006-06-14 2007-05-30 Holder for containers
JP2009514735A JP5174016B2 (en) 2006-06-14 2007-05-30 Container gripper
MX2008015315A MX2008015315A (en) 2006-06-14 2007-05-30 Gripper for containers.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06425399.0 2006-06-14
EP06425399A EP1867600B1 (en) 2006-06-14 2006-06-14 Gripper for containers

Publications (2)

Publication Number Publication Date
WO2007144262A1 true WO2007144262A1 (en) 2007-12-21
WO2007144262A8 WO2007144262A8 (en) 2008-02-28

Family

ID=37114440

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/055244 Ceased WO2007144262A1 (en) 2006-06-14 2007-05-30 Gripper for containers

Country Status (10)

Country Link
US (1) US8191948B2 (en)
EP (1) EP1867600B1 (en)
JP (1) JP5174016B2 (en)
CN (1) CN101466631B (en)
AT (1) ATE426573T1 (en)
DE (1) DE602006005914D1 (en)
ES (1) ES2323545T3 (en)
MX (1) MX2008015315A (en)
PT (1) PT1867600E (en)
WO (1) WO2007144262A1 (en)

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EP2138431A1 (en) 2008-06-24 2009-12-30 Krones AG Exchangeable grip element for transporting containers
DE102008029711A1 (en) 2008-06-24 2010-01-07 Krones Ag Changeable gripping element for transporting containers
US8360492B2 (en) 2008-06-24 2013-01-29 Krones Ag Changeable gripping element for transporting containers

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ES2323545T3 (en) 2009-07-20
JP2010500255A (en) 2010-01-07
US8191948B2 (en) 2012-06-05
EP1867600B1 (en) 2009-03-25
WO2007144262A8 (en) 2008-02-28
JP5174016B2 (en) 2013-04-03
ATE426573T1 (en) 2009-04-15
MX2008015315A (en) 2008-12-12
DE602006005914D1 (en) 2009-05-07
PT1867600E (en) 2009-06-08
EP1867600A1 (en) 2007-12-19
CN101466631A (en) 2009-06-24
US20100289287A1 (en) 2010-11-18
CN101466631B (en) 2010-10-13

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